CVE-2026-33259
published 2026-04-22CVE-2026-33259: Having many concurrent transfers of the same RPZ can lead to inconsistent RPZ data, use after free and/or a crash of the recursor. Normally concurrent…
PriorityP424medium5CVSS 3.1
AVNACHPRHUINSUCNILAH
EPSS
0.22%
13.0th percentile
Having many concurrent transfers of the same RPZ can lead to inconsistent RPZ data, use after free and/or a crash of the recursor. Normally concurrent transfers of the same RPZ zone can only occur with a malfunctioning RPZ provider.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| powerdns | recursor | — | — |
| powerdns | recursor | >= 5.2.0 < 5.2.9 | 5.2.9 |
| powerdns | recursor | >= 5.3.0 < 5.3.6 | 5.3.6 |
| powerdns | recursor | >= 5.4.0 < 5.4.1 | 5.4.1 |
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Bugzilla
CVE-2026-33259 pdns-recursor: concurrent modification of RPZ data can lead to denial of service [fedora-all]
bugzilla·2026-04-22·CVSS 5.0
CVE-2026-33259 [MEDIUM] CVE-2026-33259 pdns-recursor: concurrent modification of RPZ data can lead to denial of service [fedora-all]
CVE-2026-33259 pdns-recursor: concurrent modification of RPZ data can lead to denial of service [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-33259 pdns-recursor: concurrent modification of RPZ data can lead to denial of service
bugzilla·2026-04-22·CVSS 5.0
CVE-2026-33259 [MEDIUM] CVE-2026-33259 pdns-recursor: concurrent modification of RPZ data can lead to denial of service
CVE-2026-33259 pdns-recursor: concurrent modification of RPZ data can lead to denial of service
Having many concurrent transfers of the same RPZ can lead to inconsistent RPZ data, use after free and/or a crash of the recursor. Normally concurrent transfers of the same RPZ zone can only occur with a malfunctioning RPZ provider.
2026-04-22
Published